[spec] new commits pushed by ericprud

The following commits were just pushed by ericprud to https://github.com/shexSpec/spec:

* + grammar
  by ericP
https://github.com/shexSpec/spec/commit/586d88e3a6a4474ca15a8b6ba80d5202ba8f41d3

Received on Wednesday, 24 April 2019 08:15:59 UTC